10fb6f9c4b
Discount humongous object eager reclaim in IHOP allocation rate. Reviewed-by: tschatzl, sjohanss
63 lines
2.9 KiB
C++
63 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2020, Amazon.com, Inc. or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "gc/g1/g1OldGenAllocationTracker.hpp"
|
|
#include "logging/log.hpp"
|
|
|
|
G1OldGenAllocationTracker::G1OldGenAllocationTracker() :
|
|
_last_period_old_gen_bytes(0),
|
|
_last_period_old_gen_growth(0),
|
|
_humongous_bytes_after_last_gc(0),
|
|
_allocated_bytes_since_last_gc(0),
|
|
_allocated_humongous_bytes_since_last_gc(0) {
|
|
}
|
|
|
|
void G1OldGenAllocationTracker::reset_after_gc(size_t humongous_bytes_after_gc) {
|
|
// Calculate actual increase in old, taking eager reclaim into consideration.
|
|
size_t last_period_humongous_increase = 0;
|
|
if (humongous_bytes_after_gc > _humongous_bytes_after_last_gc) {
|
|
last_period_humongous_increase = humongous_bytes_after_gc - _humongous_bytes_after_last_gc;
|
|
assert(last_period_humongous_increase <= _allocated_humongous_bytes_since_last_gc,
|
|
"Increase larger than allocated " SIZE_FORMAT " <= " SIZE_FORMAT,
|
|
last_period_humongous_increase, _allocated_humongous_bytes_since_last_gc);
|
|
}
|
|
_last_period_old_gen_growth = _allocated_bytes_since_last_gc + last_period_humongous_increase;
|
|
|
|
// Calculate and record needed values.
|
|
_last_period_old_gen_bytes = _allocated_bytes_since_last_gc + _allocated_humongous_bytes_since_last_gc;
|
|
_humongous_bytes_after_last_gc = humongous_bytes_after_gc;
|
|
|
|
log_debug(gc, alloc, stats)("Old generation allocation in the last mutator period, "
|
|
"old gen allocated: " SIZE_FORMAT "B, humongous allocated: " SIZE_FORMAT "B,"
|
|
"old gen growth: " SIZE_FORMAT "B.",
|
|
_allocated_bytes_since_last_gc,
|
|
_allocated_humongous_bytes_since_last_gc,
|
|
_last_period_old_gen_growth);
|
|
|
|
// Reset for next mutator period.
|
|
_allocated_bytes_since_last_gc = 0;
|
|
_allocated_humongous_bytes_since_last_gc = 0;
|
|
}
|